Greven, Predator Captain [Commander 2019]

Set: Commander 2019 Type: Legendary Creature — Human Warrior Rarity: Mythic Cost: {3}{B}{R} MenaceGreven, Predator Captain gets +X/+0, where X is the amount of life you've lost this turn.Whenever Greven attacks, you may sacrifice another creature. If you do, you draw cards equal to that creature's power and you lose life equal to that creature's toughness.